These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Cult Classic: Considered by fans to be a forgotten Disney classic.
Ensemble Darkhorse: Captain Amelia, partially due to being the major Token Chick in the film, considering that there was a severe lack of female characters in the original Robert Louis Stevenson novel, mostly because she's a Badass, snarky, Lady of War.
Estrogen Brigade: Jim himself has perhaps one of biggest collection of fangirls out of all the Disney human males.The fact he is voice by a now big time celebrity Joseph Gordon-Levitt, his character design, his Troubled, but Cute personality, the fact that he is one of the rare handsome Disney heroes that remains single, his smarts and action scenes are all factors to this, even with the fact that he's 15 years old.
Fanon: Fanfic writers have given Captain Amelia the surname Smollett after the captain from the original story.
It Was His Sled: It's Treasure Island—a story that most everybody knows by heart, regardless of whether they've actually read the book. The film does add its own twists and ideas here and there, but don't expect any major surprises.
He is also shipped a lot with Silver, and on the crossover slashy side, Sinbad, Aladdin or Dimitri are popularly shipped with him. Let's just say for a film featuring one of Disney's (Renaissance-onward) rare celibate heroes, the fans really like the idea of him find more adventures out there...
Moral Event Horizon: We get the idea that Scroop is a nasty guy, but then he proves it even more by gleefully sending Mr. Arrow to his death via black hole (ironically, black holes are the trope namer) only to turn around and place the blame entirely on Jim. In the end, Jim sends him tumbling into space in a similar manner.
Scroop: "Do say hello to Mr. Arrow for me."
Jim: "Tell him yourself!"
No Problem with Licensed Games: The PC RTS, Battle At Procyon, taking place five years after the movie, with a storyline based around Jim raising through the ranks of the Royal Navy.
In addition, the game of the movie was considered pretty good in general.
The Woobie: Jim could easily fall into woobie status, given his Disappeared Dad, stressful home life, and the unbelievable amount of abuse he receives from pretty much every character except Delbert and B.E.N.